Comity — Nature of international comity — Distinction between comity and customary international law — Comity based upon considerations of courtesy rather than obligation — Privileges and immunities accorded as a matter of comity rather than of law

Diplomatic relations — Diplomatic immunity — Diplomatic status — Possession of diplomatic passport not an indication of diplomatic status or of entitlement to privileges and immunities — Special Missions Convention — Vienna Convention on Diplomatic Relations, 1961 — Holder of diplomatic passport on private visit — Whether entitled to immunity from criminal jurisdiction

State immunity — Jurisdiction — Head of State — Immunities of Head of State — Monarchy — Members of ruling family — Cousin of the King — Whether entitled to immunity when on a private visit to foreign State — The law of the Czech Republic